Liquid crystal display device

ABSTRACT

A liquid crystal display device includes a liquid crystal panel including a plurality of liquid crystal pixels, wherein the liquid crystal panel is configured to display a same picture in two adjacent frames; a driving module disposed on the non-display area, wherein the driving module is used to respectively provide each liquid crystal pixel with a same polarity pixel voltage of different levels in the two adjacent frames so as to deflect liquid crystal molecules of each liquid crystal pixel, and in each frame of the two adjacent frames, the level of the pixel voltage of each liquid crystal pixel is different from the level of the pixel voltage of the adjacent liquid crystal pixels in front, back, left or right.

FIELD OF THE DISCLOSURE

The disclosure relates to the field of liquid crystal displaytechnologies, and more particularly to a liquid crystal display device.

BACKGROUND

With the evolution of optoelectronics and semiconductor technology, flatpanel displays have also evolved. In many flat panel displays, liquidcrystal displays have been applied to all aspects of production and lifebecause of their advantages of high space utilization efficiency, lowpower consumption, no radiation and low electromagnetic interference.

The liquid crystal display generally includes a liquid crystal panel, abacklight module, and a driving module use for driving the liquidcrystal panel and the backlight module. The liquid crystal panelincludes a color filter substrate, an array substrate and a liquidcrystal. The liquid crystal is sandwiched between the color filtersubstrate and array substrate. In a large-size liquid crystal panel, anegative-type VA (Vertically Aligned) liquid crystal is often used.However, the negative type VA liquid crystal has many defects.Especially when a large viewing angle is needed, the liquid crystalpanel adopting the negative type VA liquid crystal will appear colorshift phenomenon when viewed from a large viewing angle.

In order to solve the above defects, sub-pixels are often sub-dividedinto Main/Sub sub-pixels in the liquid crystal panel adopting thenegative VA liquid crystal, and different pixel voltages are provided toMain/Sub sub-pixels. However, such pixel design often requires additionof metal wires and thin film transistors to drive the Main/Subsub-pixels, resulting in the sacrifice of the aperture ratio andreducing light transmittance of the liquid crystal panel. In order tomaintain the enough light transmittance, the luminance of the lightemitted by the backlight module needs to be improved. Consequently, costof the backlight module would be directly increased.

SUMMARY

On such basis, it is necessary to provide a liquid crystal displaydevice which can improve color shifts without affecting the apertureratio.

A liquid crystal display device includes a liquid crystal panel,including a liquid crystal panel, including a plurality of liquidcrystal pixels; a driving circuit, including: a scanning line drivingcircuit, wherein an output of the scanning line driving circuit isconnected with scanning lines of the liquid crystal panel, the scanningline driving circuit converts scanning line digital driving signal intothe scanning line electric driving signal and provided to the scanninglines; a data line driving circuit, wherein an output of the data linedriving circuit is connected with data lines of the liquid crystalpanel, the data line driving circuit converts a data line digitaldriving signal into a data line electric driving signal and provided tothe data lines; and a the driving module, used to respectively provideeach liquid crystal pixel with a same polarity pixel voltage ofdifferent levels in the two adjacent frames so as to deflect liquidcrystal molecules of each liquid crystal pixel, wherein in each frame ofthe two adjacent frames, the level of the pixel voltage of each liquidcrystal pixel is different from the level of the pixel voltage of theadjacent liquid crystal pixels in front, back, left or right.

In one embodiment, the liquid crystal display device further includes abacklight module, the liquid crystal panel is divided into M×Nrectangular panel partitions, the backlight module is divided into M×Nrectangular backlight partitions, 1≤i≤M, 1≤j≤N, the rectangular panelpartition of row i and column j corresponds to the rectangular backlightpartition of row i and column j; in each frame of two adjacent frames,after the liquid crystal molecules of each liquid crystal pixel in eachrectangular panel partition are deflected, the driving module is furtherconfigured to drive all the rectangular backlight partitions to emitlight simultaneously.

In one embodiment, the liquid crystal display device further includesbacklight module, the liquid crystal panel is divided into M×Nrectangular panel partitions, the backlight module is divided into M×Nrectangular backlight partitions, 1≤i≤M, 1≤j≤N, the rectangular panelpartition of the i-th row and the j-th column corresponds to therectangular backlight partition of the i-th row and the j-th column; ineach frame of two adjacent frames, after the liquid crystal molecules ofeach liquid crystal pixel in the rectangular panel partition of the i-throw and the j-th column are deflected, the driving module is furtherconfigured to drive the rectangle backlight partition of the i-th rowand the j-th column to emit light, till all the rectangular backlightpartition are driven to emit light.

In one embodiment, sum of the pixel voltages of all the liquid crystalpixels in the rectangular panel partition of the i-th row and the j-thcolumn and luminance of the rectangular backlight partition in the jthcolumn of the i-th row satisfy the following formula 1.Lij_1*Vij_1=Lij_2*Vij_2  [formula 1]

Wherein Lij_1 represents the luminance of the rectangular backlightpartition in the i-th row and j-th column in the previous frame of twoadjacent frames, Vij_1 represents the sum of the pixel voltages of allthe liquid crystal pixels in the rectangular panel partition of the i-throw and j-th column in the previous frame of the two adjacent frames,Lij_2 represents the luminance of the rectangular backlight partition ofthe i-th row and j-th column in the latter frame of two adjacent frames,Vij_2 represents the sum of the pixel voltages of all the liquid crystalpixels in the rectangular panel partition of the i-th row and j-thcolumn in the latter frame of the two adjacent frames.

In one embodiment, the sum of the pixel voltages of all the liquidcrystal pixels in the rectangular panel partition of the i-th row andthe j-th column and luminance of the rectangular backlight partition inthe jth column of the i-th row satisfy the following formula 1.Lij_1*Vij_1=Lij_2*Vij_2  [formula 1]

Wherein Lij_1 represents the luminance of the rectangular backlightpartition in the i-th row and j-th column in the previous frame of twoadjacent frames, Vij_1 represents the sum of the pixel voltages of allthe liquid crystal pixels in the rectangular panel partition of the i-throw and j-th column in the previous frame of the two adjacent frames,Lij_2 represents the luminance of the rectangular backlight partition ofthe i-th row and j-th column in the latter frame of two adjacent frames,Vij_2 represents the sum of the pixel voltages of all the liquid crystalpixels in the rectangular panel partition of the i-th row and j-thcolumn in the latter frame of the two adjacent frames.

In one embodiment, the sum of the pixel voltages of all the liquidcrystal pixels in the rectangular panel partition of the i-th row andthe j-th column and luminance of the rectangular backlight partition inthe jth column of the i-th row satisfy the following formula 2.Lij_1*Vij_1+Lij_2*Vij_2=2*Lij*Vij  [formula 2]

Wherein Lij represents the luminance of the rectangular backlightpartition of the ith row and the jth column when the liquid crystaldisplay is set to display the picture in only one frame, Vij representsthe sum of the pixel voltages of all the liquid crystal pixels in therectangular panel partition when the liquid crystal display is set todisplay the picture in only one frame, Lij_1 represents the luminance ofthe rectangular backlight partition in the i-th row and j-th column inthe previous frame of two adjacent frames, Vij_1 represents the sum ofthe pixel voltages of all the liquid crystal pixels in the rectangularpanel partition of the i-th row and j-th column in the previous frame ofthe two adjacent frames, Lij_2 represents the luminance of therectangular backlight partition of the i-th row and j-th column in thelatter frame of two adjacent frames, Vij_2 represents the sum of thepixel voltages of all the liquid crystal pixels in the rectangular panelpartition of the i-th row and j-th column in the latter frame of the twoadjacent frames.

In one embodiment, the sum of the pixel voltages of all the liquidcrystal pixels in the rectangular panel partition of the i-th row andthe j-th column and luminance of the rectangular backlight partition inthe jth column of the i-th row satisfy the following formula 2.Lij_1*Vij_1+Lij_2*Vij_2=2*Lij*Vij  [formula 2]

Wherein Lij represents the luminance of the rectangular backlightpartition of the ith row and the jth column when the liquid crystaldisplay is set to display the picture in only one frame, Vij representsthe sum of the pixel voltages of all the liquid crystal pixels in therectangular panel partition when the liquid crystal display is set todisplay the picture in only one frame, Lij_1 represents the luminance ofthe rectangular backlight partition in the i-th row and j-th column inthe previous frame of two adjacent frames, Vij_1 represents the sum ofthe pixel voltages of all the liquid crystal pixels in the rectangularpanel partition of the i-th row and j-th column in the previous frame ofthe two adjacent frames, Lij_2 represents the luminance of therectangular backlight partition of the i-th row and j-th column in thelatter frame of two adjacent frames, Vij_2 represents the sum of thepixel voltages of all the liquid crystal pixels in the rectangular panelpartition of the i-th row and j-th column in the latter frame of the twoadjacent frames.

In one embodiment, the sum of the pixel voltages of all the liquidcrystal pixels in the rectangular panel partition of the i-th row andthe j-th column and luminance of the rectangular backlight partition inthe jth column of the i-th row satisfy the following formula 2.Lij_1*Vij_1+Lij_2*Vij_2=2*Lij*Vij  [formula 2]

Wherein Lij represents the luminance of the rectangular backlightpartition of the ith row and the jth column when the liquid crystaldisplay is set to display the picture in only one frame, Vij representsthe sum of the pixel voltages of all the liquid crystal pixels in therectangular panel partition when the liquid crystal display is set todisplay the picture in only one frame

In one embodiment, the driving circuit further includes amicroprocessor, used to provide with a picture drive signal fordisplaying the picture; a programmable logic device, having an inputconnected to the microprocessor and converting a picture driving signalinto a digital driving signal for output, wherein the digital drivingsignal includes the scan line digital driving signal and the data linedigital drive signal; wherein, the input of the scanning line drivingcircuit is connected to an output of the programmable logic device, andthe input of the data line driving circuit is connected to an output ofthe programmable logic device.

In one embodiment, the pixel voltage of the liquid crystal pixel isproportional to the light transmittance of the liquid crystal pixel, aproduct of the light transmittance of the liquid crystal pixel andluminance of backlight is display brightness of the liquid crystalpixel.

In one embodiment, sum of the brightness of a same picture displayed intwo adjacent frames of each rectangular panel partition of the liquidcrystal panel is twice the brightness of the picture displayed in oneframe of the liquid crystal panel without compensating for low colorshift of viewing angle.

In one embodiment, the liquid crystal panel is a liquid crystal panelwith a vertically aligned display mode.

In one embodiment, the liquid crystal panel includes the transistorarray substrate, a color filter substrate and negative liquid crystal,the negative liquid crystal is sandwiched between the color filtersubstrate and the array substrate.

In one embodiment, the liquid crystal panel and the backlight module arearranged facing each other, and the liquid crystal panel and thebacklight module are combined and fixed by a frame.

In one embodiment, the liquid crystal pixel includes at least one redliquid crystal pixel, at least one green liquid crystal pixel or atleast one blue liquid crystal pixel, in the column direction, the liquidcrystal pixels are the same color liquid crystal pixels, and in the rowdirection, the liquid crystal pixels are arranged sequentially withgroups of the red liquid crystal pixel, the green liquid crystal pixeland the blue liquid crystal pixel.

A liquid crystal display device includes a liquid crystal panel,including a plurality of liquid crystal pixels, wherein the liquidcrystal panel is configured to display a same picture in two adjacentframes, the liquid crystal panel is a liquid crystal panel with avertically aligned display mode, and the liquid crystal pixel includesat least one red liquid crystal pixel, at least one green liquid crystalpixel or at least one blue liquid crystal pixel; and a driving circuit,including: a scanning line driving circuit, wherein an output of thescanning line driving circuit is connected with scanning lines of theliquid crystal panel, the scanning line driving circuit convertsscanning line digital driving signal into the scanning line electricdriving signal and provided to the scanning lines; a data line drivingcircuit, wherein an output of the data line driving circuit is connectedwith data lines of the liquid crystal panel, the data line drivingcircuit converts a data line digital driving signal into a data lineelectric driving signal and provided to the data lines; and a thedriving module, used to respectively provide each liquid crystal pixelwith a same polarity pixel voltage of different levels in the twoadjacent frames so as to deflect liquid crystal molecules of each liquidcrystal pixel, wherein in each frame of the two adjacent frames, thelevel of the pixel voltage of each liquid crystal pixel is differentfrom the level of the pixel voltage of the adjacent liquid crystalpixels in front, back, left or right.

In one embodiment, the pixel voltage of the liquid crystal pixel isproportional to the light transmittance of the liquid crystal pixel, aproduct of the light transmittance of the liquid crystal pixel andluminance of backlight is display brightness of the liquid crystalpixel.

In one embodiment, sum of the brightness of a same picture displayed intwo adjacent frames of each rectangular panel partition of the liquidcrystal panel is twice the brightness of the picture displayed in oneframe of the liquid crystal panel without compensating for low colorshift of viewing angle.

In one embodiment, the liquid crystal panel includes the transistorarray substrate, a color filter substrate and negative liquid crystal,the negative liquid crystal is sandwiched between the color filtersubstrate and the array substrate.

In the above display device, each liquid crystal pixel is provided witha same polarity pixel voltage of different levels in the two adjacentframes, and in each frame of the two adjacent frames, the level of thepixel voltage of each liquid crystal pixel is different from the levelof the pixel voltage of the adjacent liquid crystal pixels in front,back, left or right. So that at the same time of displaying the samepicture in two adjacent frames, the liquid crystal panel 10 can alsoachieve the effect of compensating for low color shift of viewing angle,and that is, the color shift phenomenon does not occur when the liquidcrystal panel 10 is viewed from the large viewing angle. The liquidcrystal pixel can not be used as a main/sub sub-pixel, it is notnecessary to add the metal wiring and the thin film transistor to drivethe main/sub sub-pixel, so that the aperture ratio would not be reduced.The product of the luminance of the rectangular backlight partition andthe sum of the pixel voltages of all the liquid crystal pixels in therectangular panel partition is equal, so that the display brightness ofthe rectangular panel partition in the previous frame and the latterframe of the two adjacent frames is the same, and thus the flickeringphenomenon can be eliminated. The sum of the brightness of a samepicture displayed in two adjacent frames of each rectangular panelpartition of the liquid crystal panel can be twice the brightness of thepicture displayed in one frame of the liquid crystal panel withoutcompensating for low color shift of viewing angle, so that thebrightness of the picture displayed by the liquid crystal panel can bethe same as the brightness of the picture displayed by the liquidcrystal panel without the compensation effect of low color shift ofviewing angle.

BRIEF DESCRIPTION OF THE DRAWINGS

Accompanying drawings illustrated here are used for providing furtherunderstanding on the present disclosure, and form part of the presentdisclosure, and schematic embodiments and illustration thereof of thepresent disclosure are used for explaining the present applicationrather than improperly limiting the present disclosure.

FIG. 1 is a schematic view of a liquid crystal display device in anembodiment according the present disclosure.

FIG. 2 is another schematic view of a liquid crystal display device inan embodiment according the present disclosure.

FIG. 3 is a flowchart of a method of driving the liquid crystal displaydevice of FIG. 1.

FIG. 4 is a flowchart of a method of driving the liquid crystal displaydevice of FIG. 2.

FIG. 5 is another flowchart of a method of driving the liquid crystaldisplay device of FIG. 2.

FIG. 6 is schematic view of a liquid crystal display device in anotherembodiment according the present disclosure.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

In order to explain the objects, technical solutions and advantages ofthe disclosure more clearly, the disclosure is further explained indetail in combination with drawings and embodiments. It should beunderstood that the specific embodiments described here are merelyintended for explaining rather than limiting the disclosure.

FIG. 1 is a schematic view of a liquid crystal display device in anembodiment according the present disclosure.

Referring to FIG. 1, the liquid crystal display device in an embodimentaccording the present disclosure includes a liquid crystal panel 10, adriving circuit board 40 and a backlight module 30.

The liquid crystal panel 10 includes a transistor array substrate, acolor filter substrate and negative liquid crystal, the negative liquidcrystal is sandwiched between the color filter substrate and the arraysubstrate. In other words, the liquid crystal panel 10 can be a liquidcrystal panel with a vertically aligned display mode. In addition, thetransistor array substrate can be a thin film transistor arraysubstrate.

In the process of assembling the liquid crystal display, the liquidcrystal panel 10 and the backlight module 30 are arranged facing eachother, and then are fixed together by a fixing structure such as aframe. The driving module 20 drives the backlight module 30 to emitlight for providing to the liquid crystal panel 10. In FIG. 1, theassembled state of the liquid crystal panel 10 and the backlight module30 is not shown for convenience of description of the embodiment.

The liquid crystal panel 10 includes A×B liquid crystal pixels (ie,subpixels) P₁₁, P₁₂, . . . , P_(AB). The liquid crystal pixel P_(ab)(wherein, 1≤a≤A, 1≤b≤B, and both a and b are integers) may be a redliquid crystal pixel, a green liquid crystal pixel, or a blue liquidcrystal pixel. There are at least one red liquid crystal pixel, at leastgreen liquid crystal pixel, and at least one blue liquid crystal pixelin the liquid crystal pixels F₁₁, P₁₂, . . . , P_(AB). As a preferredembodiment, in the column direction, the liquid crystal pixels are thesame color liquid crystal pixels, and in the row direction, the liquidcrystal pixels are arranged sequentially with groups of the red liquidcrystal pixel, the green liquid crystal pixel and the blue liquidcrystal pixel.

In the liquid crystal panel 10 of this embodiment, each liquid crystalpixel is no longer subdivided into Main/Sub sub-pixels. In order toavoid color shift viewed the liquid crystal panel 10 from a largeviewing angle, the present embodiment adopts the technical solutions asfollows. The liquid crystal panel 10 is configured to display a samepicture in two adjacent frames, and the driving module is used torespectively provide each liquid crystal pixel with a same polaritypixel voltage of different levels in the two adjacent frames so as todeflect liquid crystal molecules of each liquid crystal pixel, and ineach frame of the two adjacent frames, the level of the pixel voltage ofeach liquid crystal pixel is different from the level of the pixelvoltage of the adjacent liquid crystal pixels in front, back, left orright.

That is, the frame refresh rate of the liquid crystal panel 10 can bedoubled. For example, the frame refresh rate of the liquid crystal panel10 can be 120 HZ. For a specific method for improving the frame refreshrate, reference may be made to the related art, and details are notdescribed herein.

The technical solution adopted in the above embodiment will be furtherelaborated below.

Referring to FIG. 1, in the previous frame of two adjacent frames, thedriving module 20 provides a high pixel voltage (or a low pixel voltage)to the liquid crystal pixel P_(ab) to deflect the liquid crystalmolecules of the liquid crystal pixel P_(ab). The driving module 20provides a low pixel voltage (or a high pixel voltage) to drives theliquid crystal pixel P_((a−1)b), the liquid crystal pixel P_(a(b−1)),the liquid crystal pixel P_(a(b+1)), and the liquid crystal pixelP_((a+1)b).

In the latter frame of two adjacent frames, the driving module 20provides a low pixel voltage (or a high pixel voltage) to the liquidcrystal pixel P_(ab) to deflect the liquid crystal molecules of theliquid crystal pixel P_(ab). The driving module 20 provides a high pixelvoltage (or a low pixel voltage) to drives the liquid crystal pixelP_((a−1)b), the liquid crystal pixel P_(a(b−1)), the liquid crystalpixel P_(a(b+1)), and the liquid crystal pixel P_((a+1)b).

That is the level of the pixel voltage of each liquid crystal pixel isdifferent from the level of the pixel voltage of the adjacent liquidcrystal pixels in front, back, left or right. And each of the liquidcrystal pixels is provided with different levels of the pixel voltagesin the two adjacent front and back frames. It should be noted that, thepolarities of the high pixel voltage and the low pixel voltage are thesame. In this way, the liquid crystal panel 10 can display the samepicture in two adjacent frames.

In addition, the high pixel voltage and the low pixel voltage aredetermined in advance according to the input RGB signals andcompensating for the required viewing angle effect, and are usuallyrecorded in the driving module 10 by a look-up table (LUT). For example,taking an 8 bit driving signal as an example, each of the input RGBsignals corresponds to 256 pairs of high and low pixel voltages, sothere are 3*256 high pixel voltages and 3*256 low pixel voltages.

In the above liquid crystal display, each liquid crystal pixel isprovided with a same polarity pixel voltage of different levels in thetwo adjacent frames, and in each frame of the two adjacent frames, thelevel of the pixel voltage of each liquid crystal pixel is differentfrom the level of the pixel voltage of the adjacent liquid crystalpixels in front, back, left or right. So that at the same time ofdisplaying the same picture in two adjacent frames, the liquid crystalpanel 10 can also achieve the effect of compensating for low color shiftof viewing angle, and that is, the color shift phenomenon does not occurwhen the liquid crystal panel 10 is viewed from the large viewing angle.

In order to overcome the flicker uncomfortable phenomenon caused by theuneven brightness of the liquid crystal pixels of the liquid crystalpanel 10 in two adjacent frames, the backlight module 30 can further bedivided the brightness regions. The brightness of each brightness regioncan be and dynamically adjusted, so that the display brightness of eachliquid crystal pixel of the liquid crystal panel 10 is uniform, and theflickering phenomenon can be eliminated or reduced. Referring to FIG. 2,FIG. 2 is a schematic structural view of a liquid crystal displayaccording to another embodiment of the present application. Only thedifferences between the embodiment shown in FIG. 2 and the embodimentshown in FIG. 1 will be described below.

Referring to FIG. 2, the liquid crystal panel 10 is divided into M×Nrectangular panel partitions 10 ₁₁, 10 ₁₂, 10 _(MN), the backlightmodule 30 is divided into M×N rectangular backlight partitions 30 ₁₁, 30₁₂, . . . , 30 _(MN), the rectangular panel partition 10 _(ij)corresponds to the rectangular backlight partition 30 _(ij), 1≤i≤M,1≤j≤N and Both i and j are integers. It should be noted that althoughthe number of liquid crystal pixels included in the rectangular panelpartition 10 _(ij) is the same in the embodiment, it may be different asanother embodiment.

The sum of the pixel voltages of all the liquid crystal pixels in therectangular panel section 10 _(ij) and the luminance of the rectangularbacklight partition 30 ij satisfy the following formula 1.Lij_1*Vij_1=Lij_2*Vij_2  [formula 1]

Wherein Lij_1 represents the luminance of the rectangular backlightpartition 30 _(ij) in the previous frame of two adjacent frames, Vij_1represents the sum of the pixel voltages of all the liquid crystalpixels in the rectangular panel partition 10 _(ij) in the previous frameof the two adjacent frames, Lij_2 represents the luminance of therectangular backlight partition 30 _(ij) in the latter frame of twoadjacent frames, Vij_2 represents the sum of the pixel voltages of allthe liquid crystal pixels in the rectangular panel partition 100 _(ij)in the latter frame of the two adjacent frames.

Since the pixel voltage of the liquid crystal pixel is proportional tothe light transmittance of the liquid crystal pixel, the product of thelight transmittance of the liquid crystal pixel and the luminance of thebacklight is the display luminance of the liquid crystal pixel, that is,the product of the pixel voltage of the liquid crystal pixel and theluminance of the backlight can express the display brightness of theliquid crystal pixel. When the product of the luminance of therectangular backlight partition 30 _(ij) and the sum of the pixelvoltages of all the liquid crystal pixels in the rectangular panelpartition 10 _(ij) is equal, the display brightness of the rectangularpanel partition 10 _(ij) in the two adjacent frames is the same, andthus the flickering phenomenon can be eliminated.

After the liquid crystal panel 10 and the backlight module 30 aredivided into regions, providing display light to the liquid crystalpanel 10 by the backlight module 30 may include the following twomanners. Of course, the two manners described below are merely examples,and the present application may also include other suitable ways.

The first manner of the backlight module 30 providing the liquid crystalpanel 10 with light is as follows. In each frame of two adjacent frames,after the liquid crystal molecules of all the liquid crystal pixels inall rectangular panel partitions 10 ₁₁, 10 ₁₂, . . . , 10 _(MN) aredeflected, the driving module 20 drive all the rectangular backlightpartitions 30 ₁₁, 30 ₁₂, . . . , 30 _(MN) to emit light simultaneously.It should be understood that the luminance of each rectangular backlightpartition may be different or the same, and the luminance of eachrectangular backlight partition can be respectively controlled by thedriving module 20.

The second manner of the backlight module 30 providing the liquidcrystal panel 10 with light is as follows. In each frame of two adjacentframes, after the liquid crystal molecules of the liquid crystal pixelin the rectangular panel partition 10 _(ij) are deflected, the drivingmodule 20 drives the rectangle backlight partition 30 _(ij) to emitlight, till all the rectangular backlight partition 30 ₁₁, 30 ₁₂, . . ., 30 _(MN) are driven to emit light. That is, the driving module 20drives each of the rectangular backlight partitions in a time sharingmanner. It should be understood that the luminance of each rectangularbacklight partition may be different or the same, and the luminance ofeach rectangular backlight partition can be respectively controlled bythe driving module 20.

In order to make the brightness of the picture displayed by the liquidcrystal panel 10 the same as the brightness of the picture displayed bythe liquid crystal panel without the compensation effect of low colorshift of viewing angle, the sum of the brightness of a same picturedisplayed in two adjacent frames of each rectangular panel partition ofthe liquid crystal panel can be twice the brightness of the picturedisplayed in one frame of the liquid crystal panel without compensatingfor low color shift of viewing angle. Specific technical solutions areas follows.

The sum of the pixel voltages of all the liquid crystal pixels in therectangular panel partition 10 _(ij) and the luminance of therectangular backlight partition 30 _(ij) satisfy the following formula2.Lij_1*Vij_1+Lij_2*Vij_2=2*Lij*Vij  [formula 2]

Wherein, Lij represents the luminance of the corresponding rectangularbacklight partition when the liquid crystal display without compensatingfor low color shift of viewing angle is set to display the picture inonly one frame. Vij represents the sum of the pixel voltages of all theliquid crystal pixels in the corresponding rectangular panel partitionwhen the liquid crystal display without compensating for low color shiftof viewing angle is set to display the picture in only one frame. Itshould be noted that, the liquid crystal display without compensatingfor low color shift of viewing angle displays different pictures indifferent frames.

The method of driving the liquid crystal display will be describedbelow. FIG. 3 is a flowchart of a method of driving the liquid crystaldisplay device of FIG. 1.

Referring to FIG. 1 and FIG. 3, the driving method of the liquid crystaldisplay device according to the embodiment of the present applicationincludes the following steps.

S310, in the previous frame of the two adjacent frames, the drivingmodule 20 provides each liquid crystal pixel of the liquid crystal panel10 with the pixel voltage so as to deflect liquid crystal molecules ofeach liquid crystal pixel.

S320, in the latter frame of the two adjacent frames, the driving module20 provides each liquid crystal pixel of the liquid crystal panel 10with the pixel voltage so as to deflect liquid crystal molecules of eachliquid crystal pixel.

Wherein, in the previous frame and the latter frame, the pixel voltageof each liquid crystal pixel is different from the level of the pixelvoltage of the adjacent liquid crystal pixels in front, back, left orright, and the pixel voltages of the same liquid crystal pixel have thesame polarity and different levels.

FIG. 4 is a flowchart of a method of driving the liquid crystal displaydevice of FIG. 2.

Referring to FIG. 2 and FIG. 4, the driving method of the liquid crystaldisplay device according to the embodiment of the present applicationincludes the following steps.

S410, in the previous frame of the two adjacent frames, the drivingmodule 20 provides each liquid crystal pixel of the liquid crystal panel10 with the pixel voltage so as to deflect liquid crystal molecules ofeach liquid crystal pixel.

S420, in the previous frame of the two adjacent frames, after the liquidcrystal molecules of each liquid crystal pixel in the rectangular panelpartition 10 ₁₁, 10 ₁₂, . . . , 10 _(MN) are deflected, the drivingmodule 20 drive all the rectangular backlight partitions 30 ₁₁, 30 ₁₂, .. . , 30 _(MN) to emit light simultaneously.

S430, in the latter frame of the two adjacent frames, the driving module20 provides each liquid crystal pixel of the liquid crystal panel 10with the pixel voltage so as to deflect liquid crystal molecules of eachliquid crystal pixel.

S440, in the latter frame of the two adjacent frames, after the liquidcrystal molecules of each liquid crystal pixel in the rectangular panelpartition 10 ₁₁, 10 ₁₂, . . . , 10 _(MN) are deflected, the drivingmodule 20 drive all the rectangular backlight partitions 30 ₁₁, 30 ₁₂, .. . , 30 _(MN) to emit light simultaneously.

Wherein, in the previous frame and the latter frame, the pixel voltageof each liquid crystal pixel is different from the level of the pixelvoltage of the adjacent liquid crystal pixels in front, back, left orright, and the pixel voltages of the same liquid crystal pixel have thesame polarity and different levels.

FIG. 5 is another flowchart of a method of driving the liquid crystaldisplay device of FIG. 2.

Referring to FIG. 2 and FIG. 5, the driving method of the liquid crystaldisplay device according to the embodiment of the present applicationincludes the following steps.

S510, in the previous frame of the two adjacent frames, the drivingmodule 20 provides each liquid crystal pixel of the liquid crystal panel10 with the pixel voltage so as to deflect liquid crystal molecules ofeach liquid crystal pixel.

S520, in the previous frame of the two adjacent frames, after the liquidcrystal molecules of each liquid crystal pixel in the rectangular panelpartition 10 ₁₁, 10 ₁₂, . . . , 10 _(MN) are deflected, the drivingmodule 20 drives the rectangle backlight partition 30 _(ij) to emitlight, till all the rectangular backlight partition 30 ₁₁, 30 ₁₂, . . ., 30 _(MN) are driven to emit light.

S530, in the latter frame of the two adjacent frames, the driving module20 provides each liquid crystal pixel of the liquid crystal panel 10with the pixel voltage so as to deflect liquid crystal molecules of eachliquid crystal pixel.

S540, in the latter frame of the two adjacent frames, after the liquidcrystal molecules of each liquid crystal pixel in the rectangular panelpartition 10 ₁₁, 10 ₁₂, . . . , 10 _(MN) are deflected, the drivingmodule 20 drives the rectangle backlight partition 30 _(ij) to emitlight, till all the rectangular backlight partition 30 ₁₁, 30 ₁₂, . . ., 30 _(MN) are driven to emit light.

Wherein, in the previous frame and the latter frame, the pixel voltageof each liquid crystal pixel is different from the level of the pixelvoltage of the adjacent liquid crystal pixels in front, back, left orright, and the pixel voltages of the same liquid crystal pixel have thesame polarity and different levels.

Further, in the driving method shown in FIGS. 6 and 7, the sum of thepixel voltages of all the liquid crystal pixels in the rectangular panelpartition 10 ij and the luminance of the rectangle backlight partition30 _(ij) satisfy the above [formula 1] and/or [formula 2].

In summary, each liquid crystal pixel is provided with a same polaritypixel voltage of different levels in the two adjacent frames, and ineach frame of the two adjacent frames, the level of the pixel voltage ofeach liquid crystal pixel is different from the level of the pixelvoltage of the adjacent liquid crystal pixels in front, back, left orright. So that at the same time of displaying the same picture in twoadjacent frames, the liquid crystal panel 10 can also achieve the effectof compensating for low color shift of viewing angle, and that is, thecolor shift phenomenon does not occur when the liquid crystal panel 10is viewed from the large viewing angle. The liquid crystal pixel can notbe used as a main/sub sub-pixel, it is not necessary to add the metalwiring and the thin film transistor to drive the main/sub sub-pixel, Sothat the aperture ratio would not be reduced. The product of theluminance of the rectangular backlight partition and the sum of thepixel voltages of all the liquid crystal pixels in the rectangular panelpartition is equal, so that the display brightness of the rectangularpanel partition in the previous frame and the latter frame of the twoadjacent frames is the same, and thus the flickering phenomenon can beeliminated. The sum of the brightness of a same picture displayed in twoadjacent frames of each rectangular panel partition of the liquidcrystal panel can be twice the brightness of the picture displayed inone frame of the liquid crystal panel without compensating for low colorshift of viewing angle, so that the brightness of the picture displayedby the liquid crystal panel can be the same as the brightness of thepicture displayed by the liquid crystal panel without the compensationeffect of low color shift of viewing angle.

In another embodiment, referring to FIG. 6, the liquid crystal displaydevice further includes a driving circuit 40. The driving circuit 40includes a microprocessor 41, a programmable logic device 42, a scanningline driving circuit 43, a data line driving circuit 44 and the drivingmodule 20.

The microprocessor 41 is connected to the driving module 20. Themicroprocessor 41 can be used to provide the liquid crystal panel 10with a picture drive signal for displaying the picture. The picturedrive signal is transferred to the liquid crystal panel 10 by thedriving module 20.

An input of the programmable logic device 42 is connected to an input ofthe microprocessor 41 and converting a picture driving signal into adigital driving signal for output. The digital driving signal includesthe scan line digital driving signal and the data line digital drivesignal.

The input of the scanning line driving circuit 43 is connected to anoutput of the programmable logic device 42. An output of the scanningline driving circuit 43 is connected with scanning lines of the liquidcrystal panel 10. The scanning line driving circuit 43 convert scanningline digital driving signal into the scanning line electric drivingsignal and provided to the scanning lines.

The input of the data line driving circuit 44 is connected to an outputof the programmable logic device 42. An output of the data line drivingcircuit 44 is connected with data lines of the liquid crystal panel 10.The digital driving signal of the data line is converted into a dataline electric driving signal and provided to the data line.

The microprocessor 41 can be a Micro Control Unit (MCU). Themicroprocessor 41 can be connected to the programmable logic device 42through an interface that follows the timing of the RGB interface. Thepicture driving signal from the microprocessor 41 can be converted intoa logic control signal (that is a digital driving signal) by theprogrammable logic device 42. The digital driving signal is output tothe scan line driver circuit 43 and the data line driver circuit 44. Thescanning line driving circuit 43 converts scanning line digital drivingsignal into the scanning line electric driving signal and provided tothe scanning lines. The data line driving circuit 44 converts a dataline digital driving signal into a data line electric driving signal andprovided to the data lines.

Finally, it should be noted that the above embodiments are merelyillustrative of the technical solutions of the present disclosure andare not intended to be limiting thereof. For the person skilled in theart of the disclosure, without departing from the concept of thedisclosure, simple deductions or substitutions can be made and should beincluded in the protection scope of the disclosure.

What is claimed is:
 1. A liquid crystal display device, comprising: aliquid crystal panel, comprising a plurality of liquid crystal pixelsand configured to display a same picture in two adjacent frames; adriving circuit, comprising: a scanning line driving circuit, wherein anoutput of the scanning line driving circuit is connected with scanninglines of the liquid crystal panel, the scanning line driving circuitconverts a scanning line digital driving signal and then provides to thescanning lines; a data line driving circuit, wherein an output of thedata line driving circuit is connected with data lines of the liquidcrystal panel, the data line driving circuit converts a data linedigital driving signal and then provides to the data lines; and adriving module, used to respectively provide each liquid crystal pixelwith a same polarity pixel voltage of different levels in the twoadjacent frames so as to deflect liquid crystal molecules of each liquidcrystal pixel, wherein in each frame of the two adjacent frames, thelevel of the pixel voltage of each liquid crystal pixel is differentfrom the level of the pixel voltage of the adjacent liquid crystalpixels in up, down, left or right; and a backlight module, wherein theliquid crystal panel is divided into M×N rectangular panel partitions,the backlight module is divided into M×N rectangular backlightpartitions, 1≤i≤M, 1≤j≤N, the rectangular panel partition of row i andcolumn j corresponds to the rectangular backlight partition of row i andcolumn j; wherein sum of the pixel voltages of all the liquid crystalpixels in the rectangular panel partition of the i-th row and the j-thcolumn and luminance of the rectangular backlight partition in the jthcolumn of the i-th row satisfy the following formula 1,Lij_1*Vij_1=Lij_2*Vij_2,  [formula 1] wherein Lij_1 represents theluminance of the rectangular backlight partition in the i-th row andj-th column in the previous frame of two adjacent frames, Vij_1represents the sum of the pixel voltages of all the liquid crystalpixels in the rectangular panel partition of the i-th row and j-thcolumn in the previous frame of the two adjacent frames, Lij_2represents the luminance of the rectangular backlight partition of thei-th row and j-th column in the latter frame of two adjacent frames,Vij_2 represents the sum of the pixel voltages of all the liquid crystalpixels in the rectangular panel partition of the i-th row and j-thcolumn in the latter frame of the two adjacent frames.
 2. The liquidcrystal display device according to claim 1, wherein in each frame oftwo adjacent frames, after the liquid crystal molecules of each liquidcrystal pixel in each rectangular panel partition are deflected, thedriving module is further configured to drive all the rectangularbacklight partitions to emit light simultaneously.
 3. The liquid crystaldisplay device according to claim 1, wherein in each frame of twoadjacent frames, after the liquid crystal molecules of each liquidcrystal pixel in the rectangular panel partition of the i-th row and thej-th column are deflected, the driving module is further configured todrive the rectangle backlight partition of the i-th row and the j-thcolumn to emit light, till all the rectangular backlight partition aredriven to emit light.
 4. The liquid crystal display device according toclaim 2, wherein the sum of the pixel voltages of all the liquid crystalpixels in the rectangular panel partition of the i-th row and the j-thcolumn and luminance of the rectangular backlight partition in the jthcolumn of the i-th row satisfy the following formula 2,Lij_1*Vij_1+Lij_2*Vij_2=2*Lij*Vij,  [formula 2] wherein Lij representsthe luminance of the rectangular backlight partition of the ith row andthe jth column when the liquid crystal display is set to display thepicture in only one frame, Vij represents the sum of the pixel voltagesof all the liquid crystal pixels in the rectangular panel partition whenthe liquid crystal display is set to display the picture in only oneframe.
 5. The liquid crystal display device according to claim 3,wherein the sum of the pixel voltages of all the liquid crystal pixelsin the rectangular panel partition of the i-th row and the j-th columnand luminance of the rectangular backlight partition in the jth columnof the i-th row satisfy the following formula 2,Lij_1*Vij_1+Lij_2*Vij_2=2*Lij*Vij,  [formula 2] wherein Lij representsthe luminance of the rectangular backlight partition of the ith row andthe jth column when the liquid crystal display is set to display thepicture in only one frame, Vij represents the sum of the pixel voltagesof all the liquid crystal pixels in the rectangular panel partition whenthe liquid crystal display is set to display the picture in only oneframe.
 6. The liquid crystal display device according to claim 1,wherein the driving circuit further comprises a microprocessor, used toprovide with a picture drive signal for displaying the picture; aprogrammable logic device, having an input connected to themicroprocessor and converting a picture driving signal into a digitaldriving signal for output, wherein the digital driving signal comprisesthe scan line digital driving signal and the data line digital drivesignal; wherein, the input of the scanning line driving circuit isconnected to an output of the programmable logic device, and the inputof the data line driving circuit is connected to an output of theprogrammable logic device.
 7. The liquid crystal display deviceaccording to claim 1, wherein the pixel voltage of the liquid crystalpixel is proportional to the light transmittance of the liquid crystalpixel, a product of the light transmittance of the liquid crystal pixeland luminance of backlight is display brightness of the liquid crystalpixel.
 8. A liquid crystal display device, comprising: a liquid crystalpanel, comprising a plurality of liquid crystal pixels and configured todisplay a same picture in two adjacent frames; and a driving circuit,comprising: a scanning line driving circuit, wherein an output of thescanning line driving circuit is connected with scanning lines of theliquid crystal panel, the scanning line driving circuit converts ascanning line digital driving signal and then provides to the scanninglines; a data line driving circuit, wherein an output of the data linedriving circuit is connected with data lines of the liquid crystalpanel, the data line driving circuit converts a data line digitaldriving signal and then provides to the data lines; and a drivingmodule, used to respectively provide each liquid crystal pixel with asame polarity pixel voltage of different levels in the two adjacentframes so as to deflect liquid crystal molecules of each liquid crystalpixel, wherein in each frame of the two adjacent frames, the level ofthe pixel voltage of each liquid crystal pixel is different from thelevel of the pixel voltage of the adjacent liquid crystal pixels in up,down, left or right; wherein sum of the brightness of a same picturedisplayed in two adjacent frames of each rectangular panel partition ofthe liquid crystal panel is twice the brightness of the picturedisplayed in one frame of the liquid crystal panel without compensatingfor low color shift of viewing angle.
 9. The liquid crystal displaydevice according to claim 1, wherein the liquid crystal panel is aliquid crystal panel with a vertically aligned display mode.
 10. Theliquid crystal display device according to claim 9, wherein the liquidcrystal panel comprises the transistor array substrate, a color filtersubstrate and negative liquid crystal, the negative liquid crystal issandwiched between the color filter substrate and the array substrate.11. The liquid crystal display device according to claim 9, wherein theliquid crystal panel and the backlight module are arranged facing eachother, and the liquid crystal panel and the backlight module arecombined and fixed by a frame.
 12. The liquid crystal display deviceaccording to claim 1, wherein the liquid crystal pixel comprises atleast one red liquid crystal pixel, at least one green liquid crystalpixel or at least one blue liquid crystal pixel, in the columndirection, the liquid crystal pixels are the same color liquid crystalpixels, and in the row direction, the liquid crystal pixels are arrangedsequentially with groups of the red liquid crystal pixel, the greenliquid crystal pixel and the blue liquid crystal pixel.
 13. A liquidcrystal display device, comprising: a liquid crystal panel, comprising aplurality of liquid crystal pixels, wherein the liquid crystal panel isconfigured to display a same picture in two adjacent frames, the liquidcrystal panel is a liquid crystal panel with a vertically aligneddisplay mode, and the liquid crystal pixel comprises at least one redliquid crystal pixel, at least one green liquid crystal pixel or atleast one blue liquid crystal pixel; and a driving circuit, comprising:a scanning line driving circuit, wherein an output of the scanning linedriving circuit is connected with scanning lines of the liquid crystalpanel, the scanning line driving circuit converts a scanning linedigital driving signal into the scanning line electric driving signaland provided and then provides to the scanning lines; a data linedriving circuit, wherein an output of the data line driving circuit isconnected with data lines of the liquid crystal panel, the data linedriving circuit converts a data line digital driving signal and thenprovides to the data lines; and a driving module, used to respectivelyprovide each liquid crystal pixel with a same polarity pixel voltage ofdifferent levels in the two adjacent frames so as to deflect liquidcrystal molecules of each liquid crystal pixel, wherein in each frame ofthe two adjacent frames, the level of the pixel voltage of each liquidcrystal pixel is different from the level of the pixel voltage of theadjacent liquid crystal pixels in up, down, left or right; wherein sumof the brightness of a same picture displayed in two adjacent frames ofeach rectangular panel partition of the liquid crystal panel is twicethe brightness of the picture displayed in one frame of the liquidcrystal panel without compensating for low color shift of viewing angle.14. The liquid crystal display device according to claim 13, wherein thepixel voltage of the liquid crystal pixel is proportional to the lighttransmittance of the liquid crystal pixel, a product of the lighttransmittance of the liquid crystal pixel and luminance of backlight isdisplay brightness of the liquid crystal pixel.
 15. The liquid crystaldisplay device according to claim 13, wherein the liquid crystal panelcomprises the transistor array substrate, a color filter substrate andnegative liquid crystal, the negative liquid crystal is sandwichedbetween the color filter substrate and the array substrate.